Chain-tightener



A. C. CARLSEN.

. CHAIN TIGHTENER.v

APPLICATION FILED SEPT. 22, 1919.

1,336,679. I Patented Apr. 13, 1920;.

/O l I 9 3mm Albert C Carlsen,

ALB BT CAR S 0F lQCATELLQ, IDAHO.

CHAIN-TIGHTENER.

Application filed September 22, 1919.

To all whom it may concern:

Be it known that I, ALBERT C. CABLSEN, a citizen of the United States,residing at Pocatello, in the county of Bannock, State of Idaho, haveinvented new and useful Improvements in Chain-Tighteners, of which thefollowing is a specification.

The present invention pertains to chain tighteners, and it contemplatesthe provision of a chain tightener that is simple and inexpensive inconstruction, reliable, well adapted to withstand the usages to whichchain tighteners are ordinarily subjected, and calculated to lend itselfto use in retaining coverings on ice-cream freezers and any otherapplications.

The chain tightener constructed in accordance with my invention is also,by reason of its characteristics, adapted to practically lock thecovering on the receptacle and eliminate any accidental displacement ofsuch during the storage or transportation, and with the foregoing inmind, the invention consists in the peculiar construction, novelcombination and adaptation of parts as hereinafter described andexplicitly claimed.

lVith these and other objects in view, the invention consists of certainnovel features of construction and arrangement of parts, as will be morefully described and particularly pointed out in the appended claim.

In the accompanying drawing Figure 1 is a side view of an ice-creamfreezer showing the chain tightener securing the cover thereon.

Fig. 2 is an enlarged edge view of the chain tightener;

Fig. 3 is a plan view of the elements shown in Fig. 2.

Like reference numerals indicate corresponding parts in the differentfigures of the.

pe fica ion f L ter Paten Patented Ap 13, 1

Serial No. 325,549.

the-body portion 7 of which being curved on the arc of a circle and ofsubstantially concavo-convexed form in cross section whereby when thedevice is applied for use, the concaved bottom conforms to the curvatureof the container and snugly engages with the exterior circumferencethereof. At one extremity of the body is provided an aperture 8 in whichone end of the chain 9 is secured. 10, denoting the opposite end of thebody 7 is of V-shaped form, presenting spaced parallel bearings 11, eachprovided with openings 12, alining one with the other and into which theopposite ends of the pivot 13 of the hand operated lever 14: arejournaled. This lever 14 consists of a thickened head 15 and a reducedhandle 16, the latter being provided with a concaved exterior portion17, for a purpose to be hereinafter set forth.

Pivoted to the end of the base block 6 to which the chain 9 is fixedlysecured, is a link 18 having pivoted in the free end thereof, a lockingmember 19, which in this particular instance constitutes a cam-lever.Centrally formed on the head 15 of the hand operated lever 14, is alaterally extending bill 20 to which the free end of the chain 9connects.

In briefly describing the operation of the invention, and when it isdesired to retain a covering over the contents of a container, the chain9 is brought around the container, the hand-operating lever 14 swung atan angle with respect to the base block 6 and the free extremity of thechain 9 thence connected with the hook 20. After this operation, andthat the chain may be drawn tight around the container, thehand-operated lever is thence swung on its pivot toward the convexedsurface of the base block with the concaved face or surface of thelatter, due to its specific formation, snugly contacting with thecontainer, and the locking action of the tightener is obtained by thencerocking the link 18 in a direction toward the head 15 to permit the linkto assume a right angular position with respect to the base block 6, andthe head of the cam lever 19 is forced into engagement with theconcavity 17 of the handle 16.

From the foregoing description, taken in connection with theaccompanying drawing, the construction and operation of the inventionwill be readily understood without requiring a more extended operation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention as defined in theappended claim.

Having thus described the invention what Iclaimasnewis:k t a A chaintightener comprising a base block which is curved longitudinally andprovided at one end with spaced flanges, a lever fulcrumed between theflanges and having a curved free end portion which is spaced msemc fromthe base block when the lever is at a closed position upon the block, alink pivoted to the block and adapted to swing along the, curved endportion of the lever and a cam member pivoted to the link and having acam end portion adapted to, engage the curved end portion of the leverand flex the 20 lever when, the same is closed whereby the parts arelocked in closed osition;

ALBERT GARLSEN.

.Witnesses:

vSTELLA PELowsKA,

JOSEPH BURNS.

